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You can ship the board to me. You will never have to look at it again. I promise never to post picture of your board online so you wont encounter it again.
This special service can be yours for a discounted price of 1 BTC.
-Turtle's service for helping people not look at (allegedly) ugly things.
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Do you have any evidence (or even a clue) about who made that posting in the first place? It could have been me.. hell it could have been even you so you can make baseless accusations. |
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Perhaps I could get a show of hands from those who think they would actually buy a kit or board that would require assembly docs?
Yes, this would be my preferred way to go  . But I'm obviously not buying large volumes since it's gonna be done manually. I would buy hand soddered limited edition autographed (etched on pcb or smthn) assembled units from bkkcoins for a premium  |
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Ah thanks.
M3 is 3mm and M4 is 4mm. They just use the Mx rating for screws. Maybe ill try with both. Its best if the screw attaching the heatsink is as snug as possible...
Nope, stay with M3 screws. For two reasons: - drilling tolerances - thermal expansion of the PCB. Thanks. Any tips for mounting heatsink? Would the PCB take the weight of aliminium heatsink if the pcb is mounting on hex spacers? Probably it would, but the generic rule is not to use PCBs as mechanical carriers. I would mechanically attach heatsink(s) to the frame/enclosure and have PCBs mounted to heatsinks. So the heatsinks would support PCBs rather than the other way round. Or, if you want to use hex spacers as stands, use them to directly support the heatsink as well, i.e. use only the inner set of holes. Ah makes sense. So, drill small hole in the base of the heatsink, but leave a bigger gap in the fin area such that the screw of the spacer goes thru heatsink base plus pcb, but the weight is is carried by the heatsink. Going to be a little tricky. Or maybe not use the heatsink hole for the spacer, but rather get heatsink bigger than pcb and use the outside area for spacers... decisions... Another advice : Any issues with using thermal adhesive rather than screws/bolts for mounting pcb on heatsink? <-- cause we are no longer mounting heatsink on pcb, but other way round. |
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yes also posting pics means nothing in todays tech age as anything can be altered it proves nothing
It prooves you have access to the machine, or that ur very good at photoshop. your refusal to follow convention shows that neither is true. |
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Ah thanks.
M3 is 3mm and M4 is 4mm. They just use the Mx rating for screws. Maybe ill try with both. Its best if the screw attaching the heatsink is as snug as possible...
Nope, stay with M3 screws. For two reasons: - drilling tolerances - thermal expansion of the PCB. Thanks. Any tips for mounting heatsink? Would the PCB take the weight of aliminium heatsink if the pcb is mounting on hex spacers? |
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100 μONC for sale. Post or pm your bid. I can split into multiple trades, but would rather sell in single lot.
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What does FPGA firmware/bitstream have to do with ASIC? |
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yes its mine i have 1 that just a pic of both colors i do xbox360 ps3 and pc repairs for a living. this thread is for people who need building not people questioning whether i own it.
Not that im doubing you or anything... the correct protocol here is you write your username and todays date on a paper, place it on the device, then take a photo of it and post here. That gives some sort of assurance to people and reduce chance of someone calling scam... How much to put together a K1 and K16 if all parts and pbc provided to you? read specs on https://bitcointalk.org/index.php?topic=190731.0 |
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Quick/stupid question. Tried going thru kicad, is my understanding correct?
There are 4 outer holes for stacking the pcb, and 4 inner holes for mounting heatsink.
The gap between outer holes is 9cm and between inner holes is 8.5cm.
So if stacking vertically using hex spacers, the heatsink should not be bigger than 8.9 cm x 8.9 cm
^ Is this correct?
Also, whats the diameter of the holes? Would a M3 screw fit or we should use M2 ?
The inner holes are spaced closer than 8.5cm - more like 6.2 x 5.5 cm. The heat sink should not cover the spacer positions if you use spacers, or unless you put holes in the heatsink. It can extend a full 10cm in one direction as long as the other is < (9cm - spacer radius - a bit). The holes are 4mm diameter which seemed to about right in metric for the regular ATX motherboard size screws. I don't recall is that's M3 but it sounds right. Ah thanks. M3 is 3mm and M4 is 4mm. They just use the Mx rating for screws. Maybe ill try with both. Its best if the screw attaching the heatsink is as snug as possible... |
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Thanks for the link. I hadn't seen it yet. I'm not sure they realise over there that this isn't going to plug in and mine right now. A lot of the code is present but it's not debugged and it will require quite a bit of work still to get it working as expected, not to mention there is no driver yet for cgminer. So the best case initially is using the ktest program to feed test data and getting any result nonces back. I've been working today on a kslog utility which takes sharelog data from cgminer and decodes the merkle and midstate data so that suitable test data that is known to give a nonce result can be fed in with ktest. Also, this data is used for the chip detection algorithm so it's needed for completing the firmware. kslog is written and works but I have no idea if I got the endian swaps right. It outputs python and C syntax data statements to use in ktest and the firmware. Quick/stupid question. Tried going thru kicad, is my understanding correct? There are 4 outer holes for stacking the pcb, and 4 inner holes for mounting heatsink. The gap between outer holes is 9cm and between inner holes is 8.5cm. So if stacking vertically using hex spacers, the heatsink should not be bigger than 8.9 cm x 8.9 cm ^ Is this correct? Also, whats the diameter of the holes? Would a M3 screw fit or we should use M2 ? |
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You could use join 4 of the first one to make a cube |
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Well said Puerto.
Too many custom hardware manufacturers are squeezing all the profit out of mining. They need to leave some meat on the bone for customers, otherwise they won't be in business much longer. Only idiots are overpaying for hardware right now, the idiots will run out sooner or later.
But then again, you are preaching to Blackarrow whom has been selling FPGAs for months now that will most likely never break even as well, so I suppose he really just doesn't care that he is screwing his customers. As long as he makes money, then all is good I suppose... too many people thinking like that nowadays... share the wealth IMO. These manufacturers can still sell at attractive prices and still make a boatload of money, the problem is they want a boatload and a half.
That sounds very socialist. I don't see anything wrong in selling products at prices customers are willing to pay... Perfectly good business. Nobody is putting a gun to anyones head and forcing them to buy at ridiculous prices. Whats really wrong is lying about shipping dates(BFL style) or product specifications. Whats borderline wrong is lying about ROI. Anyone with half a brain can do their own calculations and decide if they want it or not. My problem is they are making money off of stupid people (or inexperienced people) that don't do profit calculations and network speed projections. They are screwing their customers to make a boatload of money, under the pretense that the customer is going to make all this money from their magic money printing machines. They know damn well what they're doing and that these devices will most likely never break even, but they just don't care. You think that is ethical? It's akin to a scammer selling an investment to a senile old person that they know will not be profitable venture, but they try to sell it to the old person anyways because the old person is more likely to buy it than a rational human being. Meanwhile they make a lot of money, but their investors are screwed from the get-go. Again, you think this is ethical? Mis-representing ROI is unethical. Assume "magic miner" does 65 GH/s. "Buy our magic miner @100 BTC. You can pay your mortgage and buy a yatch. Buy buy!" - Scammer tag "Buy our magic miner @100 BTC. You can make 127.6 BTC in 2 months. Buy buy!" - Evil "Buy our magic miner @100 BTC. You can make 127.6 BTC in 2 months at current difficulty. Buy buy!" - Borderline evil. Buyer now has a hint to study about difficulty. If someone is buying something for investment purpose, its their responsibility to study these things. "Buy our magic miner @100 BTC. It does 65 GH/s for sha256 based coins. Buy buy!" - Perfectly good business. "Buy our magic miner @100 BTC. It does 65 GH/s for sha256 based coins. It will make ROI in x months based on <insert long math formula, etc> difficulty calculation by <insert name of someone well respected in community>" - Perfectly good business. Are we on same page? |
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Well said Puerto.
Too many custom hardware manufacturers are squeezing all the profit out of mining. They need to leave some meat on the bone for customers, otherwise they won't be in business much longer. Only idiots are overpaying for hardware right now, the idiots will run out sooner or later.
But then again, you are preaching to Blackarrow whom has been selling FPGAs for months now that will most likely never break even as well, so I suppose he really just doesn't care that he is screwing his customers. As long as he makes money, then all is good I suppose... too many people thinking like that nowadays... share the wealth IMO. These manufacturers can still sell at attractive prices and still make a boatload of money, the problem is they want a boatload and a half.
That sounds very socialist. I don't see anything wrong in selling products at prices customers are willing to pay... Perfectly good business. Nobody is putting a gun to anyones head and forcing them to buy at ridiculous prices. Whats really wrong is lying about shipping dates(BFL style) or product specifications. Whats borderline wrong is lying about ROI. Anyone with half a brain can do their own calculations and decide if they want it or not. |
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I can't remember how many W each K16 uses. How many K16s would 100W limit you to?
32W per K16 estimated 3x32W=96W 4x32W=128W not too much eh.. 4 kva for 42U $2500 / month 125 x K16 = 4 kva 125 x K16 = ~3 K16 per 1U (most likely there are some unusable slots, use for switches, spacing, etc) https://www.stackpop.com/configure/colocation/united_states/virginia/ashburn/1723724 kva 59U for $1000 per month (or $2000 unsure if power is included or extra) 750 x k16 = 24kva 750 x k16 = 12.7 k16 per 1U or ~51 per 4U (most likely there are some unusable slots, use for switches, spacing, etc) But these can only be used once stability of these devices is proven, to not need much babysitting by hand. Cramming higher density into 1U is only viable if you are hosting the rack on your own premises and can arrange adequate cooling.. But then why would one use 1U and not bigger cases where u can have better airflow using more efficient bigger fans. come and host them in ROMANIA-EU you will pay 125x16K=4kva= 503$ / month i presume you just calculated electricity cost only... not factoring in cooling or rackspace or other facility charges. 503$ only electricity 4kva but in near future I will have a temperature control cooled room and I will open a hosting service... ofcourse not for 503$/month...but it will be an verry atractive price considering that I will provide UPS, chilled room, internet backup, and allmost 24/7 man if something needs to be done!, remote control of your device! The links I posted are about proper data centers, one in our own cities which we trust (they handle much more expensive equipment). one which we can visit. One that has high gurantees and SLAs... And offers good physical security. Personally I would host the mining equipment in a different city than one im based in... |
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I can't remember how many W each K16 uses. How many K16s would 100W limit you to?
32W per K16 estimated 3x32W=96W 4x32W=128W not too much eh.. 4 kva for 42U $2500 / month 125 x K16 = 4 kva 125 x K16 = ~3 K16 per 1U (most likely there are some unusable slots, use for switches, spacing, etc) https://www.stackpop.com/configure/colocation/united_states/virginia/ashburn/1723724 kva 59U for $1000 per month (or $2000 unsure if power is included or extra) 750 x k16 = 24kva 750 x k16 = 12.7 k16 per 1U or ~51 per 4U (most likely there are some unusable slots, use for switches, spacing, etc) But these can only be used once stability of these devices is proven, to not need much babysitting by hand. Cramming higher density into 1U is only viable if you are hosting the rack on your own premises and can arrange adequate cooling.. But then why would one use 1U and not bigger cases where u can have better airflow using more efficient bigger fans. come and host them in ROMANIA-EU you will pay 125x16K=4kva= 503$ / month i presume you just calculated electricity cost only... not factoring in cooling or rackspace or other facility charges. |
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